It’s always a pleasure when scientific studies confirm your own long-held opinions, especially when what you think flies in the face of all conventional wisdom. For instance, who knew that chocolate éclairs and triple fudge caramel brownies actually contain fewer calories than a 12-ounce glass of skim milk? Or that every $1,000 you spend on lavish vacations before the age of 65 will, over the long run, provide you with more retirement income than if you’d stashed that same $1,000 in a savings account? Well, to be honest, I made up the fact about the éclairs. And the one about vacations, too. But here’s bona fide scholarly research that excites me in the same way: Biking for transportation appears more helpful in losing weight and promoting health than working out at the gym. This means I can spend less time wearing a grimace as I endure mind-numbing exercise routines at th...